AP Biology: Unit 1 Review

Why does organic chemistry focus on the study of carbon containing compounds?

• Carbon is the most abundant element on Earth

• Carbon is the easiest element to study

• Carbon is backbone of the 4 categories of biomolecules and is found in all living things.

• Carbon makes up the largest percentage of living organisms mass

Tags

NGSS.HS-LS2-5

Which elements are found in carbohydrates?

• C, H, O

• C, H, O, N

• C, H, O, P

• C, H, O, N, P

Which elements are found in lipids?

• C, H, O

• C, H, O, N

• C, H, O, P

• C, H, O, N., P

Which elements are found in proteins?

• C, H, O

• C, H, O, N

• C, H, O, P

• C, H, O, N, P

Which elements are found in nucleic acids?

• C, H, O

• C, H, O, N

• C, H, O, P

• C, H, O, N, P

What are the structural difference between DNA and RNA?

• DNA is double stranded, RNA is single stranded

• DNA contains thymine, RNA contains uracil

• DNA contains deoxyribose sugar, RNA contains ribose sugar

• All of the above

What type of bond holds amino acids together?

• Glycosidic bond

• Ester bond

• Peptide bond

• Phosphodiester bond

What type of bonds link monomers in biological polymers?

• Ionic bonds

• Metallic bonds

• Hydrogen bonds

• Covalent bonds

In a DNA molecule, what type of bond binds adenine and thymine together?

• Peptide bonds

• Hydrogen bonds

• Covalent bonds

• Disulfide bridges

How do monomers combine into polymers?

• A molecule of water is added to the monomers forming a new hydrogen bond

• A molecule of water is removed between the two monomers, and a covalent bond is formed

• They form hydrogen bonds between their polar functional groups.

• One monomer takes electrons from the other and they form an ionic bond

Tags

NGSS.HS-LS1-6